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About IDPH

2018 Surveillance Data

2018 West Nile Virus Surveillance Data

Illinois Numbers at a Glance

Illinois Human Cases - (#)

Illinois Birds, Mosquitoes, Horses and other Animals

Cumulative totals of West Nile virus infection in birds, mosquitoes and horses by county, municipality and date collected.

Bird, Mosquito, Horse and other Animal Statistics by County
Illinois Birds, Mosquitoes, Horses and other Animals Map

Human Cases and Deaths by State

Other States Surveillance Data